Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: J Rindt on February 17, 2013, 10:43:20 am

Title: foot switch question
Post by: J Rindt on February 17, 2013, 10:43:20 am

The schem is on page #7.
Is the Reverb normally On with this amp.?
I am not sure how it works. When the switch is closed, it looks like the node between R31 and R65 is connected to ground. Does that turn the Reverb Off.?
Thank You

http://www.prowessamplifiers.com/schematics/fender/63_vibroverb_reissue_2x10-63_Vibroverb_reissue_brownface_2x10.html (http://www.prowessamplifiers.com/schematics/fender/63_vibroverb_reissue_2x10-63_Vibroverb_reissue_brownface_2x10.html)

Title: Re: foot switch question
Post by: sluckey on February 17, 2013, 11:03:21 am

Quote

Is the Reverb normally On with this amp.?

What do you mean? The reverb will be on when the footswitch is open OR if the footswitch is unplugged.

Quote

I am not sure how it works. When the switch is closed, it looks like the node between R31 and R65 is connected to ground. Does that turn the Reverb Off.?

Yes, that's how it works.

Title: Re: foot switch question
Post by: J Rindt on February 17, 2013, 11:09:02 am

Thanks Sluckey -
Yeah that is what I meant by "normally". If there is no foot switch plugged in.
Thanks Again